Spears P109 Series PVC DWV Pipe Fitting, Adapter (Will Not Accept Tail Piece), 3" NPT Male x 3" Hub Adapter for connecting pipes or fittings of different types Male NPT threads on one end and hub connection on the other for connecting pipes with different ends PVC for corrosion resistance, high strength, and less weight than fittings made from metal Operating temperature range of 73 to 140 degrees F (23 to 60 degrees C) Complies with ASTM D2665 and ASTM D3311 and certified to NSF/ANSI International Standard 14 (NSF-dwv) and NSF International Uniform Plumbing Code (NSF-U.P. Code)